RT9161B Datasheet, PDF (1/6 Pages) Richtek Technology Corporation – Simple Lithium-Ion Battery Charger

Preliminary
RT9161B
Simple Lithium-Ion Battery Charger
General Description
The RT9161B is a single-cell lithium-ion battery
charger. It includes an on-chip pass transistor for
high precision charging. Featuring with ultrahigh
precision (±1%), the RT9161B provides a very
effective and low cost solution for charging lithium-
ion battery.
Other features of the RT9161B are current limit and
thermal shutdown protection. The output voltage of
RT9161B is internally set and ranges from 4.10V to
4.35V, in 0.05V steps. The RT9161B comes in the
SOT-89 and SOT-223 packages.
Ordering Information
RT9161B-…… … …
Package type
X : SOT-89
G : SOT-223
Operating temperature range
C: Commercial standard
Output voltage
41 : 4.10V
4A : 4.15V
42 : 4.20V
4B : 4.25V
43 : 4.30V
4C : 4.35V
Features
z High Accuracy Charge Voltage: ±1%
z 6 Available Output Voltages
z Low 450mV Dropout at 300mA
z Wide Input Voltage Range
z Thermal Shutdown and Current Limit Protection
z SOT-89 and SOT-223
z Low Ground Current 110µA
Applications
z Li-Ion Battery Charger
z Cellular Phones
z Palmtop Computers
z PDAs
z Self Charging Battery Packs
Pin Configurations
Part Number
RT9161B-……CX
(Plastic SOT-89)
Pin Configurations
TOP VIEW
1 23
1. GND
2. VIN (TAB)
3. VOUT
RT9161B-……CG
(Plastic SOT-223)
123
TOP VIEW
1. GND
2. VIN (TAB)
3. VOUT
DS9161B-02 April 2001
www.richtek-ic.com.tw
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